<template>
  <div :class="{fullscreen:fullscreen}" class="tinymce-container" :style="{width:containerWidth}">
    <textarea :id="tinymceId" class="tinymce-textarea" />
    <!--<div class="editor-custom-btn-container">-->
      <!--<editorImage color="#1890ff" class="editor-upload-btn" @successCBK="imageSuccessCBK" />-->
    <!--</div>-->
  </div>
</template>

<script>
/**
 * docs:
 * https://panjiachen.github.io/vue-element-admin-site/feature/component/rich-editor.html#tinymce
 */
import editorImage from './components/EditorImage'
import plugins from './plugins'
import toolbar from './toolbar'
import load from './dynamicLoadScript'
// why use this cdn, detail see https://github.com/PanJiaChen/tinymce-all-in-one
const tinymceCDN = 'https://cdn.jsdelivr.net/npm/tinymce-all-in-one@4.9.3/tinymce.min.js'
export default {
  name: 'Tinymce',
  components: { editorImage },
  props: {
    id: {
      type: String,
      default: function() {
        return 'vue-tinymce-' + +new Date() + ((Math.random() * 1000).toFixed(0) + '')
      }
    },
    readOnly:{
      type:Boolean,
      default:false,
    },
    value: {
      type: String,
      default: ''
    },
    toolbar: {
      type: Array,
      required: false,
      default() {
        return []
      }
    },
    menubar: {
      type: String,
      default: 'file edit insert view format table'
    },
    height: {
      type: [Number, String],
      required: false,
      default: 360
    },
    width: {
      type: [Number, String],
      required: false,
      default: 'auto'
    }
  },
  data() {
    return {
      hasChange: false,
      hasInit: false,
      tinymceId: this.id,
      fullscreen: false,
      languageTypeList: {
        'en': 'en',
        'zh': 'zh_CN',
        'es': 'es_MX',
        'ja': 'ja'
      }
    }
  },
  computed: {
    containerWidth() {
      const width = this.width
      if (/^[\d]+(\.[\d]+)?$/.test(width)) { // matches `100`, `'100'`
        return `${width}px`
      }
      return width
    }
  },
  watch: {
    value(val) {
      if (!this.hasChange && this.hasInit) {
        this.$nextTick(() =>
          window.tinymce.get(this.tinymceId).setContent(val || ''))
      }
    }
  },
  mounted() {
    this.init()
  },
  activated() {
    if (window.tinymce) {
      this.initTinymce()
    }
  },
  deactivated() {
    this.destroyTinymce()
  },
  destroyed() {
    this.destroyTinymce()
  },
  methods: {
    init() {
      load(tinymceCDN, (err) => {
        if (err) {
          this.$message.error(err.message)
          return
        }
        this.initTinymce()
      })
    },
    initTinymce() {
      const _this = this
      window.tinymce.init({
        selector: `#${this.tinymceId}`,
        content_style: "p {margin: 0px; border:0px ; padding: 4px;}",//设置行间距
        language: this.languageTypeList['zh'],
        height: this.height,
        body_class: 'panel-body ',
        object_resizing: false,
        readonly: this.readOnly,
        statusbar: !this.readOnly,
        toolbar: this.readOnly?false:(this.toolbar.length > 0 ? this.toolbar : toolbar),
        menubar: this.readOnly?false:this.menubar,
        plugins: this.readOnly?false:plugins,
        end_container_on_empty_block: true,
        powerpaste_word_import: 'clean',
        code_dialog_height: 450,
        code_dialog_width: 1000,
        plugin_preview_width : "500", //This do the trick
        plugin_preview_height : "600",
        advlist_bullet_styles: 'square',
        advlist_number_styles: 'default',
        imagetools_cors_hosts: ['www.tinymce.com', 'codepen.io'],
        default_link_target: '_blank',
        link_title: false,
        nonbreaking_force_tab: true, // inserting nonbreaking space &nbsp; need Nonbreaking Space Plugin
        init_instance_callback: editor => {
          if (_this.value) {
            editor.setContent(_this.value)
          }
          _this.hasInit = true
          editor.on('NodeChange Change KeyUp SetContent', () => {
            this.hasChange = true
            this.$emit('input', editor.getContent())
          })
        },
        setup(editor) {
          editor.on('FullscreenStateChanged', (e) => {
            _this.fullscreen = e.state
          })
        },
        file_picker_types: 'file image media',
        //文件上传
        file_picker_callback(callback, value, meta){
          //文件分类
          var filetype='.pdf, .txt, .zip, .rar, .7z, .doc, .docx, .xls, .xlsx, .ppt, .pptx, .mp3, .mp4';
          //后端接收上传文件的地址
          var upurl='/demo/upfile.php';
          //为不同插件指定文件类型及后端地址
          switch(meta.filetype){
            case 'image':
              filetype='.jpg, .jpeg, .png, .gif';
              upurl='upimg.php';
              break;
            case 'media':
              filetype='.mp3, .mp4';
              upurl='upfile.php';
              break;
            case 'file':
            default:
          }
          //模拟出一个input用于添加本地文件
          var input = document.createElement('input');
          input.setAttribute('type', 'file');
          input.setAttribute('accept', filetype);
          input.click();
          input.onchange = function() {
            var file = this.files[0];

            var xhr, formData;
            console.log(file.name);
            xhr = new XMLHttpRequest();
            xhr.withCredentials = false;
            xhr.open('POST', upurl);
            xhr.onload = function() {
              var json;
              if (xhr.status != 200) {
                failure('HTTP Error: ' + xhr.status);
                return;
              }
              json = JSON.parse(xhr.responseText);
              if (!json || typeof json.location != 'string') {
                failure('Invalid JSON: ' + xhr.responseText);
                return;
              }
              callback(json.location);
            };
            formData = new FormData();
            formData.append('file', file, file.name );
            xhr.send(formData);
          }
        },
        convert_urls: false
      })
    },
    destroyTinymce() {
      const tinymce = window.tinymce.get(this.tinymceId)
      if (this.fullscreen) {
        tinymce.execCommand('mceFullScreen')
      }

      if (tinymce) {
        tinymce.destroy()
      }
    },
    setContent(value) {
      window.tinymce.get(this.tinymceId).setContent(value)
    },
    getContent() {
      console.log(window.tinymce.get(this.tinymceId))
      return window.tinymce.get(this.tinymceId).getContent()
    },
    imageSuccessCBK(arr) {
      arr.forEach(v => window.tinymce.get(this.tinymceId).insertContent(`<img class="wscnph" src="${v.url}" >`))
    }
  }
}
</script>

<style lang="scss" scoped>
.tinymce-container {
  position: relative;
  line-height: normal;
}

.tinymce-container {
  ::v-deep {
    .mce-fullscreen {
      z-index: 10000;
    }
  }
}

.tinymce-textarea {
  visibility: hidden;
  z-index: -1;
}

.editor-custom-btn-container {
  position: absolute;
  right: 4px;
  top: 4px;
  /*z-index: 2005;*/
}

.fullscreen .editor-custom-btn-container {
  z-index: 10000;
  position: fixed;
}

.editor-upload-btn {
  display: inline-block;
}
</style>
